It's very rare, I would say. I haven't seen any studies on this, but "old dog, new tricks" comes immediately to mind. I think this is part of the reason Coach K and Roy Williams got out when they did. When Calipari came to UK, he was ahead of the curve most of the time. But the game has been changing, and when Covid hit, transfer portal hit, along with NIL, CHANGE in college basketball was shoved violently into overdrive. Humans, in general, are reluctant to change, especially when they've become successful and then comfortable in their success. And the older you get, the more resistant you are to change. If I'm giving Cal credit, I'd say his offensive changes this year were some big steps. But changes in recruiting and team building is another matter, it seems. The coaches who embraced the transfer portal to building did very well this season. Calipari and UK did not. And there are multiple other changes that need to be embraced as well. Honestly. throwing all those changes at anyone all at once would be difficult. Throwing them at a 64 year-old may be too much to ask, but there is no choice in my opinion. It's change or get out of the way.